package crm.servlet;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class EncodingFilter implements Filter { 
	   
	   protected String encoding = null;    
	   protected FilterConfig filterConfig = null; 
	   public void destroy() {  
	          this.encoding = null;    
	          this.filterConfig = null;  
	   }  
       public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain)
         throws IOException, ServletException { 
            // Select and set (if needed) the character encoding to be used 
             String encoding = selectEncoding(request);   
             if (encoding != null){     
                 request.setCharacterEncoding(encoding); 
             }
            // Pass control on to the next filter 
            chain.doFilter(request, response);  
             }   
	   public void init(FilterConfig filterConfig) throws ServletException {
	           this.filterConfig = filterConfig;  
	           this.encoding = filterConfig.getInitParameter("encoding");
	      }   
	   protected String selectEncoding(ServletRequest request) { 
	             return (this.encoding);  
	      }
}